Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries the full burden and does deliver genuine value: "Never charges or publishes" rules out the two most dangerous side effects, and the resumable paid/approval handoff warns the agent the call may not complete. However, it never states whether anything is persisted, whether the call is idempotent, what auth or scope is needed, or how the handoff is actually resumed.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Two tight sentences with no filler, and the safety caveat is placed immediately after the purpose. The brevity borders on cryptic rather than wasteful, but nothing is padded.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a mutation-style tool with no annotations and no output schema, the definition covers the safety profile but leaves the core semantics thin: what "prepare" produces, what the paid/approval handoff looks like, and how to resume it are all unstated. The agent has enough to avoid harm but not enough to predict the result.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0% for the single projectId parameter, so the description would have to compensate, and it offers nothing about scope or format. The parameter name is largely self-explanatory, which keeps this from being worse than adequate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

"Prepare the highest-priority asset" gives a verb and a resource, but "prepare" is ambiguous (create a draft? generate content? stage a purchase?) and "highest-priority" is undefined. The name says "create" while the description says "prepare," and the closest sibling, preview_recommended_asset, is never referenced to clarify the distinction.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

No explicit when-to-use or when-not-to-use guidance, and no alternative is named even though preview_recommended_asset plainly exists as a likely precursor. The only usage signal is implied by the caveat that a paid/approval handoff may be returned.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.